Self-doffing mechanism for spinning, twisting, and like frames



Dec. 13, 1927. -l,652,721

o. LAMBERT SELF DOFFING MECHANISM FOR SPINNING, TWISTING, AND LIKE FRAMES Filed April '7, 1927 '7 Sheets- Sheet l lnuenfvrr QLamberf Dec. 13, 1927. 1,652,721

O. LAMBERT SELF DOFFING MECHANISM FOR SPINNING, TWISTING, AND LIKE FRAMES Filed April 7. 1927 7 Sheets Sheei; 2

' Muenfor OLqmber/ Dec. 13, 1927. 1,652,721

0. LAMBERT SELF DOFFING MECHANISM FOR SPINNING, TWISTING, AND LIKE FRAMES Filed April 7, 1927 7 Sheets-Sheet 3 lnuen/or: 0. Lambs Dec. 13, 1927. r 1,652,721

0. LAMBERT.

SELF DOFFING MECHANISM FOR SPINNING, TWISTING, AND LIKE FRAMES Filed April 7, 1927 '7 Sheets-Sheet 4 FIQIO.

lnuanf lf Ola/21b6 .bec.13, 192 7 1,652,721 0. LAMBERT SELF DOFFING MECHANISM FOR SPINNING, TWISTING, AND LIKE FRAMES Fi April '7, 1927 '7 Sheets-Sheet 5 Mae/flan 0. Lamberf Dec; 13,1927. 1,652,721

' 0. LA M BERT SELF DOFFING MECHANISM FOR SPINNING, TWISTING, AND LIKE FRAMES v Filed April 7, 1927 '7 Sheets-Sheet 6 lnue/nforz 0. Lamberf' Dec. 13, 1927; 1,652,721

0. LAMBERT SELF DOFFING MECHANISM FOR SPINNING, TWISTING, AND LIKE FRAMES Filed April '7. 1927 '7 Sheets-Sheet 7 7? FIG..9. I

6 v LP 6 Patented Dec. 13, 1927.

UNITED STATES oswALD LAMBERT, OF

PATENT OFFICE.

SELF-DOFFING MECHANISM FOR SPINNING, TWISTING, AND LIKE FRAMES.

Application filed April 7, 1927, Serial No.

This invention relates to spinning, twisting and like frames, particularly for the cotton, jute, hemp and flax spinning and twisting industries. More particularly the invention is con cerned with a self-dofiing mechanism comprising a vertically movable lifter plate or the like carrying a neck or bearing that receives the lower end of the spindle, a box to receive a; full bobbin and a box or channel to carry an empty bobbin, means for imparting horizontal reciprocating movements to the lifter plate or the like'to bring the bearing member and the boxes successively into register with the spindle and means for transferring an empty bobbin from the second box or channel to the spindle.

In the interest of simplicity of explanation it is assumed in the foregoing that only a single spindle is fitted. As is well understood, however, the frame is equipped with a series of spindles and associated elements.

In the accompanying drawings which illustrate the invention Fig. 1 is a part elevation part Vertical section showing clearly the spindle and certain essential elements of the dofling mechanism. Fig. 2 is an elevation at right angles to Fig. 1. Figs. 3, 4

and 5 are views similar to Fig. 1 showing parts of the dofling mechanism in different positions. Fig. 6 is an elevation showing the means of imparting vertical movements to the lifter plate. Figs. 7 to 15 show details.

As shown in the drawings, the flyer spindles Sp are top-driven; the spindle driving mechanism forms, however, no part of the invention.

The dotting mechanism illustrated includes the lifter plate L adapted to perform horizontal reciprocating movements on slideways Q presented by the frame members G. Such horizontal movements are imparted to the lifter plate by operation of a wheel W, Fig. 4, mounted on a shaft to at the draft end of the frame and serving to actuate gear wheels Pg, Figs. 1; 2, 3, 4 and 5 which mesh with racks R operatively 181,851, and in Great Britain May 7, 1926.

connected to the lifter plate Lp through the medium of guide rods R Fig. .1".

The lifter plate L2) is also adapted to perform rising and falling movements,being engaged on the" under side by lifter bars-L?) which may be moved vertically by rotation of a chain pulley H, Fig. 6, keyed to ashaft H8 at the draft end of the machine, movement of this chain pulley being controlled by a chain 0 from a heart-shaped cam in the usual manner. Attached to the chain c is a quick thread screw in screw-threaded engagement with a hand wheel HW by turning which latter the chain 0 is slackened so that the lifter plate Lp may be lowered into dofling position upon the racks R. Also keyed to the shaft H8 is a hand lever L. IVhen the chain 0 is slackened, the lever L can be pulled over until a detent r engages with a slot 8 upon the guide D, the lifter bars Lb being dropped clear of the lifter plate Lp into the frame members G. Figs. 8 and 9 are detail views of the lifter bar mechanism.

The lifter plate Lp carries, besides the bearing N, two boxes B and B at one side of the bearing N.

The box B is slotted for the passage of a tappet arm I and is fitted with a peg p p. Arms I are mounted upon a shaft M journalled beneath the lifter plate Lp. An adjustable counter-balance weight is adapted to act on one end of the shaft M. At the other'end of the shaft M is an arm Ga. terminating in a follower f engageable by a latch h, and adapted, when unlatched, to track a cam Gp, which controls the movements of the arms I.

The boxes B are fitted with hinged bottoms w, Fig. 7, to allow the fullbobbins to be dropped in front of the machine. For facility in collecting, all the hinged bottoms of the boxes B in each section-are operated by means of farack Y which may beunitary with the handle Z.

The tension cords 21 extend over a serrated rail'a fixed to the front of the lifter plate Lp and are each attached at one end to'a weight 10 The other end of the cord is tied to a sliding rail Z) to which is fixed a rack 6 meshing with a pinion ps. The pinion 2J8 is keyed to the shaft 8, which passes through the lifter plate Ly) to the front of the same and carries the hand wheel 71., and also the ratchet wheel M0 so that the tension of the cords may be adjusted by movement of the hand wheel h When, on dofl'mg, the pin .p, comes into contact with the rack R, the ratchet lever 1', is lifted, the ratchet wheel mu released and the weight 'w allowed to fall, rocking the weight-carrying lever Z keyed to the shaft 8,, and so by means of the rack and pinion devices shifting the rail oto move the cords t clearof the bobbins.

Sliding brackets V, Figs. Hand 15, and guide brackets V fitted to the lifter plate ends and to the end frame members, respectively, guide the lifter plate Lp rigidly during the spinning traverse. The guide brackets are arranged to allow the lifter plate to traverse in horizontal direction during the dofling operation.

The lower part OI the spindle Sp, after doftin 13 held ri idl m a neck or bearing a: b .l in

' N fixed in a lifter plate Lp and provided at its lower end with a tube n containing oil. ensuring lubrication of the spindle Sp at each ascent oft-he lifter plate. The lower end of the spindle Sp may be slightly tapered to guide it in the neck N after the dofling operation.

spindles, the full bobbins fall automatically into them and are retained in the boxes, as

' the hinged bottoms are closed. The lifter plate is now moved still further and bobbin pegs p p with empty bobbins thereon are broughtinto alignment with the spindles Sp. At the same time the pin 1, comes into confact with the stop 8 on the frame member,

releasing the latch h and allowing the lever or arm'Ga to fall. The 'shaft'M is thus rocked and the arms I operated to lift the empty bobbins on to the spindles Sp.

By manipulationof the hand wheel W'. the lifter plate L p is moved horizontally for- .wa-rd, so that the bearings N are again beneath the spindles S7). The empty bobbins on the spindles are kept from falling into the boxes B owing to the newly dotted full bobb ns being etained therein. The in is rocked by the cam G79 and latched and the arms I drop to their lower positions, allowing a fresh set of empty bobbins to be placed upon the pins 3') p.

The lever D is then moved back to its original position, the detent 1' being released. Thelifter bars Lb are thus raised and the lifter plate Lp elevated to spinning position by operation of the hand wheel HW,

The frame isnow again ready for spinning. A few turns of a hand wheel fixed on a gear shaft at the draft end of the frame will secure'the yarn round the empty bobbins; the threads can then be cut and the frame restarted.

What Iclaim is 1. Self-dotting mechanism for spinning, twisting, and like frames, comprising, in combination with a spindle, a vertically movable lifter plate, a spindle-bearing member carried by said lifter plate, a full-bobbin receptacle on said lifter plate, an empty-bobbin-carrier on said lifter plate, means for impartingvertical movements to said lifter plate, means'for imparting horizontal movement to said lifter plate to bring said member, receptacle and carrier successively into register with said spindle, and means for transferring an empty bobbin from said carrier to said spindle.

2. Self-dofiing mechanism for spinning,

twisting, and like frames, comprising, n

combination with a spindle, a vertically movable lifter plate, a spindle-bearing member. carriedby said lifter plate, a full-bobbin receptacle on said lifter plate, an empty bob bin-carrier on said lifter plate, means for imparting vertical movements to said lifter plate, means for imparting horizontal movement to said lifter plate to bring saidmember, receptacle and carrier successively into register with said'spindle, means for trans fer-ring an empty bobbin from said carrier to said spindle, and manually operable means for opening the bottom of the fullbobbin receptacle.

3. Self-dotting mechanism for spinning, twisting, and like frames, comprising, in combination with a spindle, a vertically movable lifter plate, a spindle-bearing 111611; ber carried by said lifter plate, a full-bobbin receptacle on said lifter plate, an empty-bob bin carrier on said lifter plate, means for imparting vertical movements to said lifter plate, means for imparting horizontal movement to said lifter plate to bring said member, receptacle and carrier successively into register with said spindle, a lever for transferring an empty bobbin from said carrier to said spindle, and cam and follower devices for resetting said lever.

't. Self-cloning mechanism for. spinning, twisting, and like frames, comprising, in combination with a spindle, a vertically mo abl ft r plate, a spi dle-bearing memtransferring an empty bobbin from said carrier to said spindle, and bobbin-braking and 10 releasing means dependent for its operation on the vertical movement of said lifter plate.

In testimony whereof I have signed my name to this specification.

O. LAMBERT. 

